Appointed arbitrator reviews the case to decide a just resolution and award. The Arbitrator is responsible for ruling on all pre-hearing motions, other than those listed in Rule 74(d)(1) of the Arizona Rules of Civil Procedure.1. to act as arbiter upon (a disputed question) : to settle (a dispute between two people or groups) after hearing the arguments and opinions of both. Arbitration is a mini trial, which presumably will last no more than two (2) hours. Hearings are conducted in an informal setting and manner that saves money and reduces the number of cases in trial courts. Arbitrators act as judges. Communicate with people who need services or information in a language other than English. The County School Superintendent may call for an election to fill a vacancy on a local Governing Board as an alternative to appointment. The Supreme Court has agreed to take up a case pertaining to the definition of "waters of the U.S." (WOTUS) under the Clean Water Act (CWA). ARBITRATE meaning: 1.